US2957688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for heat treating continuous punched strip
Assignee: PROCTOR SILEX CORP
•
Filing: 1957-05-29
•
Granted: 1960-10-25
•
Expires: 1977-05-29
Abstract
No abstract record available.
Inventors
- 👤 Harry C Luecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:02
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; B; B21; B21D; B21D28/00; B21D28/24; B21D28/26; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4622
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1817902A
Cited
US2059976A
Cited
US2143672A
Cited
US2274072A
Cited
US2309343A
Cited
US2278136A
Cited
US2363540A
Cited
US2510462A
Cited
US2569054A
Cited
US2617854A
Cited
US2730233A
Cited
US2742274A
Cited
US2730348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |